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Forecast Addendum - 12/04/2021 - 07:00am

Submitted by nmeyers on Sat, 12/04/2021 - 5:52am
Recent Observations: 

Over the last 24 hours on Mount Shasta, winds have been moderate out of the W/NW. Temperatures are balmy,  with a low of 42 °F and a high of 53 °F. The height of snow at the Old Ski Bowl is 20.5 inches (53 cm) and we've observed very little settlement.

October and early November precipitation brought a solid base of snow to Mount Shasta. Even with warmer temperatures, that base still lingers above treeline. Mid-week, snow depth was 14 in (35 cm) at 8,000 ft and 32 in (80 cm) at 9,000 ft. One must walk with recreational equipment approximately .25 to .5 mile before consistent snow is found on the mountain, ~ 7,500 feet. Sunny, sheltered, southerly facing slopes have melted out.

Snow surfaces are pretty smooth, though expect areas of wind textured, variable snow above treeline. Slide-for-life, firm conditions exist up high. Be leery of hidden obstacles if snow becomes soft. There are plenty of visible obstacles as well. Skiing conditions have been spring-like, with the snow softening in select areas during the warmest hours of the day. A few have reported some fun turns!

Climbers should be prepared for falling ice and rock. A handful of climbers have been summiting with success.

There is no usable snow at Sand Flat for cross-country skiing. The road above Bunny Flat is closed and free of snow for ~1 mile. Snowmobiling from Bunny Flat is not possible. There is no snow at Castle Lake and the lake is not frozen. In the Eddies, there is little to no snow for recreation.



Ryan Lazzeri, new MSAC forecaster, up for some weather station maintenance in the Old Ski Bowl, yesterday 12.03.21

Mountain Weather: 

Until Mother Nature decides to flip the winter switch back on, it's going to be more of the same: sunny days and cool nights, brought to you by high pressure exerting its influence over the area. Valleys will see some air stagnation. A strong temperature inversion is present this morning, with a 12 degree difference from Mt. Shasta City (30° F) to treeline on the mountain (42° F). Most notably for the near future will be an increase in wind out of the west/northwest. Expect increasing wind beginning this afternoon and into Monday. Above treeline and upper mountain winds could reach speeds of 50+ mi/hr. Wind chill will be a life-threatening factor for unprepared climbers. Daytime high temps will remain in the mid 30s for the next two days, beginning to cool off next week. At this point, the late Sunday/Monday storm looks underwhelming, but we will take anything!

Today 7-8 Weather : 
Sunny
Today 7-8 Wind Direction: 
W
Today 8-9 Weather: 
Sunny and windy
Today 8-9 Wind Direction: 
West
Tomorrow 7-8 Weather: 
Mostly sunny
Tomorrow 7-8 Wind Direction: 
NW
Tomorrow 8-9 Weather: 
Mostly sunny, windy
Tomorrow 8-9 Wind Direction: 
NW
Tonight 7-8 Weather: 
Partly cloudy
Tonight 7-8 Wind Direction: 
NW
Tonight 8-9 Weather: 
Partly cloudy, windy
Tonight 8-9 Wind Direction: 
NW
Today 7-8 Temp: 
47
Today 8-9 Temp: 
34
Tomorrow 7-8 Temp: 
45
Tomorrow 8-9 Temp: 
34
Tonight 7-8 Temp: 
39
Tonight 8-9 Temp: 
31
39
33
52
40
0
0
0
44.5
42.5
53.5
47
20
0
0
Grey Butte Temp Cur: 
44
Grey Butte Temp Min: 
43.5
Grey Butte Temp Max: 
52
Grey Butte Temp Avg: 
47
Grey Butte Wind Cur: 
16
Grey Butte Wind Max: 
17.5
Grey Butte Wind Gust Max: 
36
Grey Butte Wind Avg: 
WNW
Castle Lake Temp Cur: 
45.5
Castle Lake Temp Min: 
44
Castle Lake Temp Max: 
53
Castle Lake Temp Avg: 
48.5
Castle Lake Snow Depth: 
0
Castle Lake Snow New: 
0
Mount Eddy Temp Cur: 
40
Mount Eddy Temp Min: 
38.5
Mount Eddy Temp Max: 
52
Mount Eddy Temp Avg: 
44
Mount Eddy Wind Cur: 
3
Mount Eddy Wind Max: 
3.5
Mount Eddy Wind Gust Max: 
4.5
Mount Eddy Wind Avg: 
WSW
Mount Eddy Snow Depth: 
0
Mount Eddy Snow New: 
0
Ash Creek Bowl Temp Cur: 
41
Ash Creek Bowl Temp Min: 
39.5
Ash Creek Bowl Temp Max: 
48
Ash Creek Bowl Temp Avg: 
42
Ash Creek Bowl Snow New: 
0
Ash Creek Ridge Temp Cur: 
40
Ash Creek Ridge Temp Min: 
40
Ash Creek Ridge Temp Max: 
53.5
Ash Creek Ridge Temp Avg: 
45.5
Ash Creek Ridge Wind Cur: 
5.5
Ash Creek Ridge Wind Max: 
11
Ash Creek Ridge Wind Gust Max: 
17
Ash Creek Ridge Wind Avg: 
W
Mt. Shasta City Temp Cur: 
30
Mt. Shasta City Temp Min: 
30
Mt. Shasta City Temp Max: 
61
Mt. Shasta City Temp Avg: 
41.5
Mt. Shasta City Wind Cur: 
0
Mt. Shasta City Wind Min: 
0
Mt. Shasta City Wind Max: 
4
Mt. Shasta City Wind Avg: 
N
Sand Flat Comments: 
snow sensor down
Grey Butte Wind Min: 
0
Mount Eddy Wind Min: 
0
Ash Creek Ridge Wind Min: 
1.5
Sand Flat Snow Settlement: 
0
Ski Bowl Snow Settlement: 
0
Castle Lake Snow Settlement: 
0
Mount Eddy Snow Settlement: 
0
Ash Creek Bowl Snow Settlement: 
0
Measured Precipitation Oct: 
9.3
Normal Precipitation Oct: 
6.25
Percent Precipitation Oct: 
149
Measured Precipitation MTD: 
0
Normal Precipitation MTD: 
0.62
Percent Precipitation MTD: 
0
Measured Precipitation YTD: 
25.25
Normal Precipitation YTD: 
31.63
Percent Precipitation YTD: 
80
Today SWE: 
0.00
Tonight SWE: 
0.00
Tomorrow SWE: 
0.00
Today Wind Max 7-9: 
5
Tonight Wind Max 7-9: 
10
Tomorrow Wind Max 7-9: 
10
Today Wind Min 7-9: 
0
Tonight Wind Min 7-9: 
5
Tomorrow Wind Min 7-9: 
5
Today Wind Max 9-11: 
20
Tonight Wind Max 9-11: 
30
Tomorrow Wind Max 9-11: 
40
Today Wind Min 9-11: 
10
Tonight Wind Min 9-11: 
20
Tomorrow Wind Min 9-11: 
30
Today Snow Max 7-9: 
0.00
Tonight Snow Max 7-9: 
0.00
Tomorrow Snow Max 7-9: 
0.00
Today Snow Min 7-9: 
0.00
Tonight Snow Min 7-9: 
0.00
Tomorrow Snow Min 7-9: 
0.00
Today Snow Max 9-11: 
0.00
Tonight Snow Max 9-11: 
0.00
Tomorrow Snow Max 9-11: 
0.00
Today Snow Min 9-11: 
0.00
Tonight Snow Min 9-11: 
0.00
Tomorrow Snow Min 9-11: 
0.00
Ash Creek Bowl HS: 
0
Weather Station Discussion: 
The table below summarizes data reported from all of our weather stations over the last 24 hours.
Seasonal Stats Discussion: 
The wet season is October 1 through May 1. The table below summarizes recorded vs. normal precipitation amounts for the City of Mount Shasta.
Overall Danger Rating: 
Low
Current Time: 
4:00 AM